Vehicle control method for solar electric vehicle

A solar electric vehicle, vehicle control technology, applied in electric vehicles, electric vehicle charging technology, electrical devices, etc., can solve problems such as complex control systems

Inactive Publication Date: 2015-11-18
BEIJING LIKAIYUAN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the improvement of vehicle safety, stability and comfort, more and more control components are required on electric vehicles, more and more information needs to be exchanged between subsystems, and the entire control system is becoming more and more complex

Method used

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  • Vehicle control method for solar electric vehicle

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] This embodiment provides a vehicle control method for a solar electric vehicle, such as figure 1 shown, including:

[0029] S1. System initialization, set the initial value of all peripherals, including clock, timer, digital input / output, analog-to-digital conversion, RS485 bus, CAN bus, WiFi communication;

[0030] CAN bus to realize communication with battery management system (BMS), motor controller, and solar cell peak power tracker (MPPT), with a baud rate of 125Kbps. The specific agreement is formulated according to the internal agreement of each component.

[0031] CAN bus and BMS realize two-way communication, read battery pack temperature, voltage, SOC, current and other data, and send battery pack output relay control signals. According to the highest single-cell battery voltage, the lowest single-cell single-cell voltage, and the highest single-group temperature signal control, if any quantity exceeds the threshold (that is, reaches the state of over-discha...

Embodiment 2

[0055] This embodiment provides a vehicle control method for a solar electric vehicle. The difference from Embodiment 1 is that the vehicle control method of this embodiment adds a redundant design to control the motor controller in a voltage mode, that is, when a CAN bus failure is detected, an analog signal is output to the motor controller to ensure that the motor controller The car continues to run stably.

[0056] Specifically, according to the control of the gear switch, accelerator and brake signals, 4 DA signals are output, of which 2 accelerator signals are the same and 2 brake signals are the same. When the input signal of the brake sensor is not zero, regardless of the state of the accelerator input signal at this time, the accelerator output signal is forced to be zero.

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Abstract

The invention discloses a vehicle control method for a solar electric vehicle. The vehicle control method comprises the steps of initializing system, performing power on self test, finishing a timed task and so on. Data information and fault information of each part in the vehicle are obtained in real time; fault are diagnosed and analyzed in time; states of an energy system and a power system are judged and predicated; and an optimal running strategy is made for the solar electric vehicle.

Description

technical field [0001] The invention relates to a vehicle control method for an electric vehicle. Specifically, it relates to a vehicle control method for a solar electric vehicle. Background technique [0002] Pure electric vehicles have the characteristics of zero emissions, low power consumption costs, and quiet driving, and are considered to be an important way to solve current vehicle emissions and reduce vehicle usage costs. At present, many domestic and foreign companies attach great importance to the research and development of electric vehicles, and have launched a variety of products, such as Tesla, Nissan's Leaf, Mercedes-Benz's electric version of SMART, domestic BAIC's E150, and BYD's E6. The vehicle control system of an electric vehicle determines the handling performance of the vehicle, and is the core component of the power system and information system of a pure electric vehicle. An electric vehicle is a unified whole composed of multiple subsystems. With...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L3/00B60L3/12
CPCY02T90/16
Inventor 熊宇迪杨春晖陈跃辉詹果儿张琦邢江赵博田宇晟郭楠张文学吴迪苏涛袁宝伦
Owner BEIJING LIKAIYUAN TECH
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